CN114975677A - Light receiving device, light receiving packaging device, related equipment and method - Google Patents
Light receiving device, light receiving packaging device, related equipment and method Download PDFInfo
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- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
- H01L31/125—Composite devices with photosensitive elements and electroluminescent elements within one single body
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
- H04B10/25759—Details of the reception of RF signal or the optical conversion before the optical fibre
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
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- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
- H04B10/6931—Automatic gain control of the preamplifier
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- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
- H04B10/6932—Bandwidth control of bit rate adaptation
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/693—Arrangements for optimizing the preamplifier in the receiver
- H04B10/6933—Offset control of the differential preamplifier
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Abstract
The application provides a light receiving device, a light receiving packaging device, related equipment and a method. The decoupling module is used for carrying out direct current removing processing on the first electric signal to obtain a second electric signal. The second electric signal is a pulse signal, and the first electric signal and the second electric signal carry control information for controlling the working state of the amplification module. The voltage stabilizing module is used for carrying out voltage stabilizing processing on the first electric signal to obtain a third electric signal with constant amplitude. The photoelectric conversion module is used for receiving the burst optical signal and converting the received burst optical signal into a fourth electrical signal. The amplifying module is used for amplifying the fourth electric signal under the control of the control information in the second electric signal and the power supply of the third electric signal and outputting the amplified fourth electric signal. By the method and the device, the signal pin requirement of the optical receiver in the PON system can be reduced, and the packaging cost of the optical receiver is further reduced.
Description
Technical Field
The present application relates to the field of optical communication technologies, and in particular, to an optical receiving device, an optical receiving packaging device, and related apparatuses and methods.
Background
In a Passive Optical Network (PON) system, an Optical Line Terminal (OLT) may establish a communication link with a plurality of Optical Network Units (ONUs) in the PON system through a splitter (passive splitter), the OLT may transmit data to each ONU in a broadcast manner during downlink data transmission, and the ONUs transmit data to the OLT in a time division multiplexing manner during uplink data transmission. In uplink data transmission, different ONUs send uplink data to the OLT at different time slots, and a communication signal sent by an ONU to the OLT at one time slot is called a burst optical signal.
When the amplifying module is applied to an optical receiver of a PON system, the amplifying module needs to be triggered to enter a capability of a fast response signal by a reset signal, such as capability of fast adjusting a dc bias, fast adjusting a gain state, and the like. In addition, the PON system generally supports coexistence of multiple data transmission rates, for example, in a 10GPON system, burst optical signals arriving at the OLT may have multiple rates such as 1.25Gbps, 2.5Gbps, 10Gbps, and so on, and therefore, it is necessary to use a rate select signal (or rate indication signal, etc.) to assist the optical receiver to select and support different rates.
At present, the most widely adopted package form of an optical receiver is a 5-PIN (5 PINs) TO CAN (transistor outline package) form package, which may have a better package cost, and the optical receiver obtained by the package form package may have 5 signal PINs, which are respectively used for inputting a VCC signal, inputting a VPD signal, grounding, and outputting an electrical signal obtained by the optical receiver differentially, while the optical receiver in the PON system additionally needs a reset signal and a rate select signal, and two additional signal PINs need TO be added on the basis of the five signal PINs, which are respectively used for receiving the reset signal and the rate select signal, which undoubtedly increases the package cost of the optical receiver in the PON system.
Disclosure of Invention
The application provides an optical receiving device, an optical receiving packaging device, a related device and a method, which can reduce the signal pin requirement of an optical receiver in a PON system and further reduce the packaging cost of the optical receiver.
A first aspect of the embodiments of the present application provides an optical receiving apparatus, configured to receive and process a burst optical signal, where the optical receiving apparatus may be (or be a part of) an optical receiving component, and may also be a part of an optical transceiver component, and the optical receiving apparatus includes a decoupling module, a voltage stabilizing module, a photoelectric conversion module, and an amplifying module. Wherein the content of the first and second substances,
the decoupling module is used for receiving the first electric signal and performing direct current removal processing on the first electric signal to obtain a second electric signal; the first electrical signal carries control information; the second electric signal is a pulse signal and carries control information; the control information is used for controlling the working state of the amplifying module.
The voltage stabilizing module is used for receiving the first electric signal and stabilizing the first electric signal to obtain a third electric signal; the third electric signal is a signal with constant amplitude, and the third electric signal is used for providing stable working voltage for the amplification module.
The photoelectric conversion module is used for receiving the burst optical signal and converting the received burst optical signal into a fourth electrical signal.
The amplifying module is used for amplifying the fourth electric signal under the control of the control information in the second electric signal and the power supply of the third electric signal and outputting the amplified fourth electric signal.
The control information can be coupled with a signal for supplying power to the amplifying module to form a first electric signal and then is input into the optical receiving device, so that the number of signal pins of the optical receiving device is saved; in addition, the first electric signal can realize the decoupling of the control information and the power supply signal in the optical receiving device through the decoupling module and the voltage stabilizing module, so that the decoupled control information and the decoupled power supply signal respectively act normally in the optical receiving device, and the optical receiving device is ensured to perform normal information recovery on the burst optical signal under the control of the control information and the power supply of the power supply signal.
In an alternative implementation, the control information may include reset information and/or rate selection information. The reset information is used for controlling the amplification module to enter a burst light signal receiving state, and the amplification module comprises N signal receiving working modes corresponding to different receiving rates respectively, wherein N is a positive integer. The rate selection information is used to control the amplification module to be in a signal receiving working mode corresponding to a first receiving rate, where the first receiving rate is one of the above-mentioned N different receiving rates.
In another alternative implementation, the control information includes reset information and rate selection information. The optical receiving device also comprises a separation module which is used for respectively extracting the reset information and the rate selection information from the second electric signal under the power supply of the third electric signal and respectively transmitting the reset information and the rate selection information to the amplification module. For example, the reset information may be indicated by individual pulses in the second electrical signal, and the rate selection information may be indicated by the pulse amplitude, pulse width, or number of pulses in a set of consecutive pulses in the second electrical signal.
Further, in another alternative implementation manner, the separation module is specifically configured to perform pulse detection on the second electrical signal to obtain reset information, perform peak detection on the second electrical signal, and obtain rate selection information according to a detected signal peak value. For example, the rate selection information is indicated by the pulse amplitude of the pulses in the second electrical signal, and the corresponding rate selection information can be obtained by peak detection of the second electrical signal.
Further, for example, the separation module may include a first pulse detection unit, a first peak detection unit, N first comparison units, and a first logic operation unit. Wherein:
the first pulse detection unit is used for carrying out pulse detection on the second electric signal and outputting a pulse signal of one clock period when the pulse signal is detected, and the pulse signal output by the first pulse detection unit is used for triggering the amplification module to enter a burst signal receiving state.
The first peak detection unit is used for carrying out peak detection on the second electric signal and outputting a detected first peak signal.
Each of the N first comparing units is configured to compare magnitudes of the received first reference signal and the first peak signal, and output a first comparison result level. The first reference signals received by the N first comparison units are different.
The first logic operation unit is used for performing logic operation according to the first comparison result levels output by the N first comparison units and outputting rate indication bit levels corresponding to the N receiving rates. Among the rate indicating bit levels corresponding to the N receiving rates, only the rate indicating bit level corresponding to the first receiving rate is the first level, and the first level is used for controlling the amplifying module to be in a signal receiving working mode corresponding to the first receiving rate.
Further, in another alternative implementation manner, the separation module is specifically configured to perform pulse detection on the second electrical signal to obtain reset information, perform peak duration detection on the second electrical signal, and obtain rate selection information according to the detected peak duration. For example, the rate selection information is indicated by the pulse width of the second electrical signal, and the corresponding rate selection information can be obtained by detecting the peak duration of the second electrical signal.
Further, for example, the separation module includes a second pulse detection unit, a second peak detection unit, a second comparison unit, N signal delay units, N second logic operation units, and a third logic operation unit. Wherein:
the second pulse detection unit is used for carrying out pulse detection on the second electric signal and outputting a pulse signal of one clock period when the pulse signal is detected, and the pulse signal output by the second pulse detection unit is used for triggering the amplification module to enter a burst signal receiving state.
The second peak detection unit is used for carrying out peak detection on the second electric signal and outputting a detected second peak signal. The peak duration of the second peak signal is positively correlated with the pulse width of the second electrical signal.
The second comparing unit is used for comparing the magnitude of the received second reference signal and the second peak value signal and outputting a second comparison result level.
Each of the N signal delay units is configured to delay the second comparison result level to obtain a first delay signal, and the delay durations of the N signal delay units for the second comparison result level are different from each other.
And the second logic operation unit is used for carrying out logic AND operation on the comparison level of the received first delay signal and the second result to obtain the indication level of the operation result.
The third logic operation unit is used for performing logic operation according to the operation result indication levels output by the N second logic operation units and outputting rate indication bit levels corresponding to the N receiving rates; wherein, only the rate indicating bit level corresponding to the first receiving rate is the second level in the rate indicating bit levels corresponding to the N receiving rates; the second level is used for controlling the amplification module to be in a signal receiving working mode corresponding to the first receiving rate.
Further, in another alternative implementation manner, the separation module is specifically configured to perform pulse detection on the second electrical signal, obtain a plurality of reset information according to the detection of a plurality of pulse signals, and obtain rate selection information according to the number of pulses detected in the detection period. For example, the rate selection information is indicated by the number of pulses in a set of consecutive pulses in the second electrical signal, and the corresponding number selection information can be obtained by detecting the number of pulses detected in the second electrical signal during the detection period.
Further, for example, the separation module includes a third pulse detection unit and a triggered polling unit. Wherein:
the third pulse detection unit is used for carrying out pulse detection on the second electric signal and outputting a pulse signal of one clock period when the pulse signal is detected, and the pulse signal output by the third pulse detection unit is used for triggering the amplification module to enter a burst signal receiving state.
The trigger polling unit is used for detecting the pulse signals in the detection period, determining a first receiving rate from N receiving rates according to a first rate polling sequence under the trigger of any pulse signal detected in the detection period, and setting a rate indicating bit level corresponding to the first receiving rate to be a third level. The trigger polling unit is further configured to output rate indication bit levels corresponding to the N receiving rates. Among the rate indicating bit levels corresponding to the respective N receiving rates, only the rate indicating bit level corresponding to the first receiving rate is the third level. The third level is used for controlling the amplifying module to be in a signal receiving working mode corresponding to the first receiving rate.
In another alternative implementation, the control information includes one of reset information or rate selection information. The light receiving device also comprises an extraction module which is used for extracting the control information from the second electric signal under the power supply of the third power supply signal and transmitting the control information to the amplification module.
Further, if the control information includes reset information, the extraction module is specifically configured to perform pulse detection on the second electrical signal to obtain the reset information.
Further, if the control information includes rate selection information, the extraction module is specifically configured to perform peak detection on the second electrical signal, and obtain the rate selection information according to a detected signal peak value. For example, the rate selection information is indicated by the pulse amplitude of the pulses in the second electrical signal, and the corresponding rate selection information can be obtained by peak detection of the second electrical signal.
Further, if the control information includes rate selection information, the extraction module is specifically configured to perform peak duration detection on the second electrical signal, and obtain the rate selection information according to the detected peak duration. For example, the rate selection information is indicated by the pulse width of the second electrical signal, and the corresponding rate selection information can be obtained by detecting the peak duration of the second electrical signal.
Further, if the control information includes rate selection information, the extraction module is specifically configured to perform pulse detection on the second electrical signal, and obtain the rate selection information according to the number of pulses detected in the detection period. For example, the rate selection information is indicated by the number of pulses in a set of consecutive pulses in the second electrical signal, and the corresponding number selection information is obtained by detecting the number of pulses in the second electrical signal detected during the detection period.
A second aspect of the embodiments of the present application provides a light receiving package device, which includes at least five signal pins, a photodetector, and a transimpedance amplifier. The five signal pins comprise a first signal pin, a second signal pin, a third signal pin, a fourth signal pin and a fifth signal pin.
The first signal pin is used for inputting a first electric signal. The first electrical signal carries control information, and the control information is used for controlling the working state of the transimpedance amplifier.
The second signal pin is used for inputting a fifth electric signal, and the fifth signal pin is used for grounding.
The photoelectric detector is used for converting the received burst optical signal into a fourth electric signal under the power supply of the fifth electric signal.
The transimpedance amplifier is used for receiving the first electric signal, carrying out direct-current filtering processing on the first electric signal to obtain a second electric signal, and carrying out voltage stabilization processing on the first electric signal to obtain a third electric signal. The second electrical signal carries control information. The transimpedance amplifier is further configured to amplify the fourth electrical signal under control of the control information in the second electrical signal and under power supply of the third electrical signal, so as to obtain an amplified fourth electrical signal.
The third signal pin and the fourth signal pin are used for differentially outputting a fourth electric signal amplified by the trans-impedance amplifier.
The light receiving package may be packaged based on different packaging forms, for example, any one of TO CAN coaxial packaging forms, butterfly packaging form, Chip On Board (COB) packaging form, BOX (BOX) packaging form, and the like.
After the control information can be coupled with a signal for supplying power to the transimpedance amplifier to form a first electric signal, the first electric signal is input into the optical receiving packaging device through the first signal pin, so that the number of signal pins of the optical receiving packaging device is saved; in addition, the first electrical signal can realize the decoupling of the control information and the power supply signal through the transimpedance amplifier in the optical receiving packaging device, so that the decoupled control information and the decoupled power supply signal respectively act normally in the transimpedance amplifier, and the optical receiving packaging device is ensured to carry out normal information recovery on the burst optical signal under the control of the control information and the power supply of the power supply signal.
In an alternative implementation, the control information may include reset information and/or rate selection information. The reset information is used for controlling the trans-impedance amplifier to enter a burst signal receiving state. The transimpedance amplifier includes N signal reception operating modes corresponding to different reception rates, where N is a positive integer, the rate selection information is used to control the transimpedance amplifier to be in the signal reception operating mode corresponding to a first reception rate, and the first reception rate is one of the N different reception rates.
A third aspect of the embodiments of the present application provides an optical receiving apparatus including an optical receiving device and a signal coupling device.
The signal coupling device is used for receiving the sixth electric signal and the seventh electric signal, coupling the sixth electric signal and the seventh electric signal and outputting the first electric signal. The sixth electrical signal is used for supplying power to the light receiving device, the seventh electrical signal carries control information, and the control information is used for controlling the working state of the light receiving device.
The light receiving device is used for receiving the first electric signal, performing direct current removal processing on the first electric signal to obtain a second electric signal, and performing voltage stabilization processing on the first electric signal to obtain a third electric signal. The optical transceiver is also used for receiving the burst optical signal and a fifth electric signal, converting the received burst optical signal into a fourth electric signal under the power supply of the fifth electric signal, and amplifying and outputting the fourth electric signal under the control of the second electric signal and the power supply of the third electric signal. The light receiving device may be the device according to the first aspect of the embodiments of the present application or any alternative implementation thereof, or the device according to the second aspect of the embodiments of the present application or any alternative implementation thereof.
In an alternative implementation, the control information may include reset information and/or rate selection information. The reset information is used to control the optical receiving apparatus to enter a burst signal receiving state. The optical receiving device comprises N signal receiving working modes corresponding to different receiving rates, wherein N is a positive integer, the rate selection information is used for controlling the optical receiving device to be in the signal receiving working mode corresponding to a first receiving rate, and the first receiving rate is one of the N different receiving rates.
A fourth aspect of the embodiments of the present application provides an optical signal processing method, which may be applied to an optical receiving device, and configured to receive and process an optical burst signal, where the optical receiving device may receive a first electrical signal, and perform dc removal processing on the first electrical signal to obtain a second electrical signal. The first electrical signal carries control information; the second electrical signal is a pulse signal, and the second electrical signal carries control information. The control information is used to control the operating state of the light receiving device. And carrying out voltage stabilization treatment on the first electric signal to obtain a third electric signal, wherein the third electric signal is a signal with constant amplitude. And receiving the burst optical signal and a fifth electrical signal, converting the received burst optical signal into a fourth electrical signal under the power supply of the fifth electrical signal, amplifying the fourth electrical signal according to the second electrical signal and the third electrical signal, and outputting the amplified fourth electrical signal.
In an alternative implementation, the control information may include reset information and/or rate selection information. The reset information is used to control the optical receiving apparatus to enter a burst signal receiving state. The optical receiving device comprises N signal receiving working modes corresponding to different receiving rates, wherein N is a positive integer, the rate selection information is used for controlling the optical receiving device to be in the signal receiving working mode corresponding to a first receiving rate, and the first receiving rate is one of the N different receiving rates.
In the fifth aspect of the embodiments of the present application, another optical signal receiving method may be applied to an optical communication device, where the optical communication device includes an optical receiving apparatus, and in the method, the optical communication device may receive a sixth electrical signal and a seventh electrical signal, couple the sixth electrical signal and the seventh electrical signal to obtain a first electrical signal, where the sixth electrical signal is used to supply power to the optical communication device, and the seventh electrical signal carries control information, where the control information is used to control a working state of the optical receiving apparatus. A first electrical signal is then input to the optical receiving device, which is used by the optical receiving device to perform the method provided in the fourth aspect of the embodiments of the present application.
In an alternative implementation, the control information may include reset information and/or rate selection information. The reset information is used to control the optical receiving apparatus to enter a burst signal receiving state. The optical receiving device comprises N signal receiving working modes corresponding to different receiving rates, wherein N is a positive integer, the rate selection information is used for controlling the optical receiving device to be in the signal receiving working mode corresponding to a first receiving rate, and the first receiving rate is one of the N different receiving rates.
A sixth aspect of the present embodiment provides a chip, where the chip includes a processor and a communication interface, and the processor is coupled to the communication interface, and is configured to implement all or part of the functions of the optical receiving apparatus provided in the embodiment of the present application, or implement all or part of the functions of the optical receiving packaging apparatus provided in the embodiment of the present application, or implement the optical signal processing method provided in the embodiment of the present application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an optical receiver packaged in a 5-PIN TO CAN format according TO an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a PON system according to an embodiment of the present application;
fig. 3a is a schematic structural diagram of a light receiving device according to an embodiment of the present disclosure;
fig. 3b is a schematic structural diagram of a light receiving device according to an embodiment of the present disclosure;
fig. 3c is a schematic structural diagram of a light receiving device according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram illustrating a first electrical signal provided in accordance with an embodiment of the present application;
FIG. 5 is a schematic diagram of providing a first electrical signal according to an embodiment of the present application;
FIG. 6 is a schematic diagram of providing a first electrical signal according to an embodiment of the present application;
FIG. 7 is a schematic diagram of providing a first electrical signal according to an embodiment of the present application;
fig. 8 is a schematic circuit implementation diagram of a decoupling module 301 according to an embodiment of the present application;
fig. 9 is a schematic circuit implementation diagram of a separation module 305 according to an embodiment of the present application;
fig. 10 is a schematic circuit implementation diagram of another separation module 305 provided in an embodiment of the present application;
FIG. 11 is a diagram of a second comparison result level and a first delay signal output by each delay according to an embodiment of the present application;
fig. 12 is a schematic circuit implementation diagram of another separation module 305 provided in the embodiment of the present application;
fig. 13 is a schematic diagram illustrating an internal structure of a light receiving package device according to an embodiment of the present disclosure;
fig. 14 is a schematic circuit implementation diagram of a signal coupling apparatus according to an embodiment of the present application;
fig. 15 is a schematic diagram of a light receiving device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Before introducing the optical receiving device, the optical receiving packaging device, the related apparatus and the method provided by the present application, first, a simple description is made on an optical receiver packaged in a 5-PIN TO CAN format, and referring TO fig. 1, fig. 1 is a schematic structural diagram of an optical receiver packaged in a 5-PIN TO CAN format provided by an embodiment of the present application, as shown in fig. 1, the optical receiver 1 includes a cap 1 having a protection and sealing function, a base 2 having a fixed bearing function, and a Photodiode (PD) 3, a transimpedance amplifier (TIA) 4, a plurality of signal PINs 5, and electrical components such as a capacitor, a resistor, an inductor and the like for driving normal operation, filtering and the like of the optical receiver. Wherein the photodiode 3 can be used for receiving burst optical signals and performing photoelectric conversion on the burst optical signals. The transimpedance amplifier 4 may be configured to amplify an electrical signal obtained by photoelectric conversion in the photodiode 3. There may be five signal pins 5 (four are shown in the view of fig. 1), which may be used for the supply signal to the input photodiode 3, the supply signal to the input transimpedance amplifier 4, ground, and the electrical signal amplified by the differential output transimpedance amplifier 4, respectively. The signal pin 5 can be connected with the photodiode 3 and the signal electrode on the transimpedance amplifier 4 by gold wires and the like, so that the transmission of the electric signal after photoelectric conversion is realized.
Typically, the signal pins 5 and the base of the base 2 are electrically isolated from each other, for example, by glass paste or other insulating material. The entire substrate may be used as a ground plane and connected to the external ground through a special signal pin connected to the substrate. An external ground is understood to mean a plane of equal potential, such as earth, or a conductor connected to earth. Wherein, the connection between each element on the base 2 can also be realized by welding.
The optical receiver shown in fig. 1 can be applied to a scenario that does not require input of a reset signal and a rate select signal, which cannot be satisfied by the optical receiver shown in fig. 1 having 5 signal pins for the case that the reset signal and the rate select signal are required to be used in a PON system.
The optical receiving device, the optical receiving packaging device, the related equipment and the method provided by the embodiment of the application can reduce the signal pin requirement of the optical receiver in the PON system through multiplexing the signal pin, thereby reducing the packaging cost of the optical receiver. First, application scenarios of related apparatuses, devices and methods according to embodiments of the present application are described.
The related apparatus, device, and method provided in this embodiment of the present application may be applied to a scenario in which data is transmitted through an optical signal, such as in a PON system, or in an OTN (optical transport network) system, and an application scenario of the related apparatus, device, and method is described by taking an optical receiver of an OLT in the PON system as an example.
With the development of optical communication technology, various PON systems have been developed, such as next-generation PON (NG-PON), NG-PON1, NG-PON2, gigabit-capable PON (GPON), 10 gigabit-per-second PON (10 gigabit-per-second PON, XG-PON), symmetric 10 gigabit-passive optical network (10-gigabit-per-second passive optical network, XGs-PON), Ethernet PON (Ethernet PON, EPON), 10 gigabit-per-second EPON (10 gigabit-per-second PON, 10G-EPON), next-generation PON (next-generation PON, NG-EPON), wavelength division multiplexing (wavelength-division multiplexing (WDM) PON, time division multiplexing (WDM-wavelength-division multiplexing (WDM-PON, WDM-P) and WDM-wavelength-division multiplexing (WDM-P2, WDM-wavelength-division multiplexing (WDM-P) PON, WDM-2, WDM-P3, and P3, P2, P3, P2, P3, P3, P2, P2, P3, P3, P, An asynchronous transfer mode PON (APON), a Broadband PON (BPON), a 25gigabit per second PON (25gigabit per second PON, 25G-PON), a 50gigabit per second PON (50gigabit per second PON, 50G-PON), a 100gigabit per second PON (100gigabit per second PON, 100G-PON), a 25gigabit per second EPON (25gigabit per second EPON, 25G-EPON), a 50gigabit per second EPON (50gigabit per second EPON, 50G-EPON), a 100gigabit per second EPON (100gigabit per second EPON, 100G-EPON), and other rate GPON, EPON, and the like.
Referring to fig. 2, fig. 2 is a schematic diagram of a PON system according to an embodiment of the present disclosure, and the PON system shown in fig. 2 may include an OLT001, an optical splitter 002, an optical splitter 003, an ONU004, an ONU005, an optical splitter 006, an ONU007, and an ONU 008. The OLT001 establishes communication connections with the ONUs 004, 005, 007, and 008 on the user side, respectively.
On one hand, ONU004, ONU005, ONU007, and ONU008 may transmit burst optical signals to OLT001 at different time slots, after the burst optical signals reach OLT001, OLT001 needs a certain burst recovery time to stably recover information in the burst optical signals, that is, PON system needs to reserve a certain time overhead for information recovery of optical receiver on the burst optical signals, the time overhead belongs to invalid transmission for PON system, that is, OLT001 needs to perform information recovery on received burst optical signals in the time overhead, but valid data cannot be transmitted in the time overhead, therefore, the less time overhead, the higher effective transmission efficiency of PON system on information is. And the reset signal can trigger the optical receiver to enter a burst signal receiving state in which the information of the burst optical signal can be quickly recovered. For example, when the optical receiver does not enter a burst signal receiving state, the transimpedance amplifier in the optical receiver usually responds to adjustment of the dc bias and gain state relatively slowly for a long continuous series of 0 signals or 1 signals to ensure that the signals are not amplified and distorted, and after the optical receiver of the PON system enters the burst signal receiving state, the transimpedance amplifier in the optical receiver can rapidly adjust the dc bias and gain state of the burst optical signal having different dc biases, signal swings, and the like after triggering a reset signal, so that the optical receiver can rapidly recover information in the burst optical signal, thereby reducing the overhead of the above-mentioned invalid transmission and improving the effective transmission efficiency of the PON system on the information.
On the other hand, the rates of information transmission performed by the burst optical signals of the ONUs 004, 005, 007, and 008 may not be completely the same, and it is required that the optical receiver in the OLT001 acquires the information transmission rate corresponding to the burst optical signal through a rate select signal before performing information recovery on the burst optical signal, and adjusts the optical receiver to a signal receiving working mode for processing the burst optical signal at the information transmission rate, for example, the states of gain, bandwidth, control loop, and the like in a transimpedance amplifier in the optical receiver may be adjusted, so as to implement accurate recovery of the burst optical signal at the corresponding information transmission rate.
In view of the above two aspects, if the PON system in which the OLT001 is located has a high requirement for effective information transmission efficiency, it is necessary that the optical receiver in the OLT001 be able to receive the reset signal and enter a burst signal receiving state by the reset signal. If the PON system in which OLT001 is located supports different information transmission rates, it is necessary that an optical receiver in OLT001 be able to receive a rate select signal and adjust to a signal receiving operation mode at the rate indicated by the rate select signal under the action of the rate select signal. Therefore, if the OLT001 shown in fig. 2 uses the optical receiver shown in fig. 1, the reset signal and/or the rate select signal cannot be input and normally act on the optical receiver, and therefore, the improvement of the effective information transmission efficiency and/or the support of different information transmission rates cannot be realized. The optical receiving device, the optical receiving packaging device, the related equipment and the method provided by the application can be applied to the OLT001 in fig. 2, and not only can the effective transmission efficiency of information be improved and/or the support for different information transmission rates be realized by multiplexing the same signal pin by different signals, but also the signal pin requirement of the optical receiver in the OLT001 can be reduced, so that the packaging cost of the optical receiver is reduced. Specific implementations will be described in detail below.
It should be understood that the above description of the optical receiver in the OLT001 is only an exemplary description of application scenarios of the optical receiving apparatus, the optical receiving encapsulating apparatus, the related apparatus and the method in the present application, and the optical receiving apparatus, the optical receiving encapsulating apparatus, the related apparatus and the method provided in the present application are not limited to be applied in the PON system, and may also be applied in other optical communication systems that require an additional optical receiver controlled by an additional control signal (e.g., a reset signal and/or a rate select signal).
One or more of a receiving optical sub-assembly (ROSA), a transmitting optical sub-assembly (TOSA), and a bi-directional optical sub-assembly (BOSA) are generally included in an optical communication device. An optical receiving component (which may also be referred to as an optical receiver, etc.) may be used to receive an optical signal and convert the optical signal into an electrical signal. An optical transmission component (which may also be referred to as an optical transmitter, etc.) is used to convert an electrical signal into an optical signal and transmit the optical signal. The optical transceiver module includes both functions of the optical receiver module and the optical transmitter module, i.e. the optical transceiver module includes both the optical receiver module and the optical transmitter module. It should be understood that the optical receiving device, the optical receiving package device, and the related apparatus provided in the embodiments of the present application may be an optical receiving component (or a part thereof), or may also be a part of an optical transceiver component, and the optical signal processing method provided in the embodiments of the present application may be applied to the optical receiving component, or may also be applied to the optical transceiver component.
The following describes a light receiving device, a light receiving packaging device, related devices and methods provided by the embodiments of the present application with reference to fig. 3a to 14. Referring first to fig. 3a to 3c, fig. 3a to 3c are schematic structural diagrams of a light receiving device provided in an embodiment of the present application, as shown in fig. 3a, the light receiving device 30 may at least include a decoupling module 301, a voltage stabilizing module 302, a photoelectric conversion module 303, and an amplifying module 304, further, the light receiving device 30 may further include other functional modules, as shown in fig. 3b, the light receiving device 30 may further include a separating module 305, and as shown in fig. 3c, the light receiving device 30 may further include an extracting module 306, and the like. It should be understood that the connection between the modules in the embodiment of the present application may indicate that the modules are connected by wires, leads, etc., or may indicate that the modules are indirectly connected by other modules.
The decoupling module 301 is configured to receive the first electrical signal, and perform dc removal processing on the first electrical signal to obtain a second electrical signal. The voltage stabilizing module 302 is configured to receive the first electrical signal, and perform voltage stabilizing processing on the first electrical signal to obtain a third electrical signal. The optical-to-electrical conversion module 303 is configured to receive the burst optical signal and convert the received burst optical signal into a fourth electrical signal. The amplifying module 304 is configured to amplify the fourth electrical signal under the control of the control information in the second electrical signal and under the power supply of the third electrical signal, and output the amplified fourth electrical signal.
The first electrical signal carries control information, which can be used to control the operating state of the amplifying module 304. And a second electric signal obtained by the first electric signal through direct current removal processing is a pulse signal, and the second electric signal carries control information. The third electrical signal obtained by voltage stabilization of the first electrical signal is a signal with a constant amplitude, and can be used to provide a stable operating voltage for the amplification module 304.
In this embodiment, the control information may be coupled with the signal for supplying power to the amplifying module 304 to be the first electrical signal, and then input to the light receiving device 30, so that the number of signal pins of the light receiving device 30 is reduced; in addition, the first electrical signal can achieve decoupling of the control information and the power supply signal in the optical receiving device 30 through the decoupling module 301 and the voltage stabilizing module 302, so that the decoupled control information and the power supply signal respectively act normally in the optical receiving device 30, and normal information recovery of the burst optical signal is ensured under control of the control information and power supply of the power supply signal by the optical receiving device 30.
The control information may be any control information that may be applied to the amplification module 304, and in one implementation, the control information may include reset information and/or rate selection information. The reset information is used to control the amplifying module 304 to enter a burst signal receiving state (as described above, the burst signal receiving state is a state that can quickly respond to the burst optical signal and quickly recover the transmission information therefrom), for example, the reset information may be information carried by the reset signal in the foregoing. The amplifying module 304 may have signal receiving operation modes corresponding to different receiving rates (as described above, the signal receiving operation modes corresponding to different receiving rates may include different states of gain, bandwidth, control loop, and the like in the amplifying module 304), and the rate selection information is used to control the amplifying module 304 to be in the signal receiving operation mode corresponding to the first receiving rate, where the first receiving rate is one of the different receiving rates, for example, the rate selection information may be information carried by the rate select signal described above.
The first electrical signal may be a pulse signal including a certain dc component, may be a rectangular pulse signal having a certain dc component, a sinusoidal pulse signal having a certain dc component, or the like. If the control information includes the reset information and does not include the rate selection information, each pulse in the first electrical signal may instruct the amplifying module 304 to enter the burst signal receiving state. If the control information includes rate selection information and does not include reset information, the pulse in the first electrical signal may represent different receiving rates by its pulse width, pulse amplitude, pulse number within a certain time, and the like, thereby indicating that the amplifying module 304 is in a signal receiving operating mode corresponding to the corresponding receiving rate. If the control information includes reset information and rate selection information, each pulse in the first electrical signal may indicate that the amplifying module 304 enters a burst signal receiving state, and the pulse in the first electrical signal may also indicate different receiving rates through a pulse width, a pulse amplitude, a pulse number within a certain time, and the like. Fig. 4-7 are schematic diagrams for providing a first electrical signal according to an embodiment of the present application, which are illustrated below in conjunction with fig. 4-7.
Referring to fig. 4, the first electrical signal shown in fig. 4 is a rectangular pulse signal having a certain dc component, the control information carried in the first electrical signal includes reset information and does not include rate selection information, and each pulse in fig. 4 may indicate that the amplifying module 304 enters a burst signal receiving state.
Referring to fig. 5, the first electrical signal shown in fig. 5 is a rectangular pulse signal with a certain dc component, the control information carried in the first electrical signal includes rate selection information and does not include reset information, the pulses in fig. 5 have different amplitudes, and the different amplitudes of the pulses may represent different receiving rates. For example, in fig. 5, a pulse with a pulse amplitude of V1 represents rate 1, a pulse with a pulse amplitude of V2 represents rate 2, and a pulse with a pulse amplitude of V3 represents rate 3.
Referring to fig. 6, the first electrical signal shown in fig. 6 is a rectangular pulse signal having a certain dc component, the control information carried in the first electrical signal includes rate selection information and does not include reset information, the pulses in fig. 6 have different widths, and the different pulse widths may represent different receiving rates. For example, in fig. 6, a pulse with a pulse width of t1 indicates a rate 1, a pulse with a pulse width of t2 indicates a rate 2, and a pulse with a pulse width of t3 indicates a rate 3.
Referring to fig. 7, the first electrical signal shown in fig. 7 is a rectangular pulse signal with a certain dc component, the control information carried in the first electrical signal includes rate selection information and does not include reset information, and the number of pulses in a group of consecutive pulses in the first electrical signal of fig. 6 is different, wherein the pulse occurrence time interval in a certain group of consecutive pulses is shorter, and the pulse occurrence time interval with other groups of consecutive pulses is longer. For example, the time interval between the occurrence of each pulse in the same set of consecutive pulses is of the order of ns (nanoseconds), while the time interval between the occurrence of pulses in different sets of consecutive pulses is of the order of us (microseconds). In fig. 7, pulse 1 and pulse 2 are a set of consecutive pulses, pulse 3 is a separate set of consecutive pulses, and pulse 4, pulse 5, and pulse 6 are a set of consecutive pulses, the number of pulses in a set of consecutive pulses being 1 representing rate 1, the number of pulses in a set of pulses being 2 representing rate 2, and the number of pulses in a set of pulses being 3 representing rate 3.
The form of the first electrical signal in the case where the rate selection information and the reset information are included in the control information carried by the first electrical signal is similar to the form of the first electrical signal in the case where the rate selection information is included in the control information carried by the first electrical signal and the reset information is not included, which can be exemplified by referring to fig. 5 to 7. In the case where the rate selection information and the reset information are included in the control information: for example, each pulse in the first electrical signal shown in fig. 5 may instruct the amplification module 304 to enter the burst signal reception state, while pulses of different pulse amplitudes may indicate different reception rates. Each pulse in the first electrical signal, as also shown in fig. 6, may instruct the amplification module 304 to enter a burst optical signal reception state, while pulses of different pulse widths may indicate different reception rates. Each pulse in the first electrical signal, as also shown in fig. 7, may instruct the amplification module 304 to enter a burst signal reception state, while different numbers of pulses in the same set of consecutive pulses may indicate different reception rates.
The first electrical signal may be input to the optical receiving device 30 through the same signal pin of the optical receiving device 30, and then transmitted to the decoupling module 301 and the voltage stabilizing module 302, respectively.
The decoupling module 301 may implement dc removal processing on the first electrical signal in different manners, for example, filtering out a dc component in the first electrical signal in a capacitive filtering manner, or a capacitive and resistive filtering manner. Referring to fig. 8, fig. 8 is a schematic circuit implementation diagram of a decoupling module 301 according to an embodiment of the present application, as shown in fig. 8, a first electrical signal is input for decoupling, and after the module 301, a dc component in the first electrical signal may be filtered by a capacitor 1, so as to output a second electrical signal. In fig. 8, the resistor 1 and the circuit are optional components, one end of the resistor 1 may be connected to the output end of the capacitor 1, and the other end of the resistor 1 may be grounded or connected to a required level, so as to add an extra common mode level to the pulse signal output by the capacitor 1, thereby obtaining a second electrical signal.
It should be understood that the second electrical signal carries the control information, the specific information content of the control information carried thereby, and the specific representation of the control information are the same as in the first electrical signal. For example, if the control information carried in the first electrical signal includes rate selection information and the different receiving rates are represented by different pulse widths in the first electrical signal, such as pulse width t1 representing rate 1 and pulse width t2 representing rate 2, then the rate selection information is also carried in the second electrical signal and the different pulse widths in the second electrical signal also represent different receiving rates, and pulse width t1 represents rate 1 and pulse width t2 represents rate 2.
The voltage stabilizing module 302 may include a voltage regulator having a function of stabilizing the first electrical signal, such as a low drop-out (LDO) linear voltage regulator, a bandgap voltage reference (bandgap voltage reference) circuit, and the like, and removes an ac component in the first electrical signal by outputting the voltage stabilizing processing to the first electrical signal, so as to obtain a third electrical signal with a constant amplitude.
In an alternative implementation, the control information may include reset information and rate selection information, and the light receiving device 30 may further include a separation module 305, configured to extract the reset information and the rate selection information from the second electrical signal and transmit the reset information and the rate selection information to the amplifying module 304, respectively, when the third power supply signal is powered. The reset information and the rate selection information may be respectively transmitted to the amplifying module 304 through two electrical signals, or may be respectively transmitted to the amplifying module 304 at different times through one electrical signal.
The reset information in the control information may be indicated by a pulse in the second electrical signal, and any pulse may indicate that the amplifying module 304 enters a burst signal receiving state. The rate selection information may have multiple indication modes, so the separation module 305 may implement separation of the reset information and the rate selection information in different modes according to different indication modes of the rate selection information. The concrete implementation is introduced according to the situation:
in the first implementation, if the different rate selection information is represented by different pulse amplitudes of pulses in the second electrical signal, the separation module 305 may be specifically configured to perform pulse detection on the second electrical signal to obtain reset information, perform peak detection on the second electrical signal, and obtain the rate selection information according to a detected signal peak value.
In a more specific implementation, it is assumed that the amplifying module 304 has N signal receiving operation modes corresponding to different receiving rates, where N is a positive integer. The separation module 305 may further include a first pulse detection unit, a first peak detection unit, N first comparison units, and a first logic operation unit. Wherein:
the first pulse detection unit is configured to perform pulse detection on the second electrical signal and output a pulse signal of one clock cycle when the pulse signal is detected, where the pulse signal output by the first pulse detection unit is used to trigger the amplification module 304 to enter a burst signal receiving state.
The first peak detection unit is used for carrying out peak detection on the second electric signal and outputting a detected first peak signal.
Each of the N first comparison units is configured to compare the received first reference signal with the first peak signal, and output a first comparison result level; the first reference signals received by the N first comparison units are different.
The first logic operation unit is used for carrying out logic operation aiming at the N receiving rates according to the first comparison result levels output by the N first comparison units and outputting rate indication bit levels corresponding to the N receiving rates. Among the rate indicating bit levels corresponding to the N receiving rates, only the rate indicating bit level corresponding to the first receiving rate is the first level, and the first level is used to control the amplifying module 304 to be in the signal receiving working mode corresponding to the first receiving rate, for example, the first level is a high level, that is, the receiving rate corresponding to the high level in the rate receiving bit levels is the first receiving rate, and the rate receiving bit levels corresponding to the other receiving rates are all low levels, so that the amplifying module 304 may adjust to or maintain the signal receiving working mode corresponding to the first receiving rate whose rate receiving bit level is the high level.
Further, the first pulse detection unit may be implemented by various pulse edge detectors, the first peak detection unit may be implemented by various peak detectors, each first comparison unit may be implemented by various comparators (e.g., voltage comparators), and the logic operation unit may be implemented by various logic elements, logic units, and logic gate circuits, or by a logic function circuit composed of logic elements and logic gate circuits. This will be described by way of example in fig. 9.
Referring to fig. 9, fig. 9 is a schematic circuit implementation diagram of a separation module 305 according to an embodiment of the present disclosure, as shown in fig. 9, in the separation module 305, a pulse edge detector is used to implement a function of a first pulse detection unit, a peak detector is used to implement a function of a first peak detection unit, a comparator 1, comparators 2 and … … are used to implement a function of N first comparison units, and a logic operation unit 1 is used to implement a function of a first logic operation unit.
The buffer in fig. 9 is an optional component, and may be a 1:1 amplifier, and is used to buffer the second input electrical signal, so as to perform impedance matching, reduce distortion of the signal, and improve the anti-interference performance of the signal.
In fig. 9, each of the comparator 1, the comparator 2, the comparator … …, and the comparator N includes a positive input terminal and a negative input terminal, the positive input terminals of the comparator 1, the comparator 2, the comparator … …, and the comparator N can be respectively connected to reference voltages Vref1, Vref2, … …, and VrefN, and the negative input terminals are all connected to the first peak signal output by the peak detector. The Vref1, Vref2, … … and VrefN are different from each other, and the amplitude of the reference voltage received by each comparator is related to the pulse peak corresponding to each of the N different receiving rates in the second electrical signal. For example, the peak value of the pulse corresponding to the rate 1, the rate 2, the rate … …, and the rate N in the second electrical signal is U 1 、U 2 、……、U N (wherein, U 1 -U N Sequentially increasing), the Vref1, Vref2, … …, VrefN may be in relation to the various pulse peaks described above for U 1 <Vref1<U 2 ，U 2 <Vref2<U 3 ，……，U N <VrefN. The comparator 1, the comparators 2, … …, and the comparator N output a first comparison result level corresponding to the rate 1, a first comparison result level corresponding to the rate 2, … …, and a first comparison result level corresponding to the rate N, respectively.
In fig. 9, the second electrical signal may be transmitted to the peak detector and the pulse edge detector respectively after passing through the buffer, on one hand, the pulse signal therein is detected by the pulse edge, and then the pulse signal carrying the reset information is output, on the other hand, the peak value of the second electrical signal is detected by the peak detector, and the detected first peak value signal is transmitted to the N comparators respectively, each comparator compares the first peak value signal with its own reference voltage, and under the condition that its own reference voltage is higher than the first peak value signal, the first comparison result level output by the comparator is a high level, and otherwise, the first comparison result level output by the comparator is a low level. And then the first comparison result levels corresponding to each receiving rate are respectively transmitted to the logic operation unit 1 for logic operation, and the rate indication bit levels corresponding to each receiving rate are output. In one implementation, the logic operation unit 1 may implement the logic operation corresponding to the following logic operation formula: when i is an integer and 1 < i ≦ N, the rate indicating bit level for rate i ═ a (first comparison result level for rate i) logical and [ logical not (first comparison result level for rate i-1) ] … … logical and [ logical not (first comparison result level for rate 1) ]; when i is equal to 1, the rate indication bit level corresponding to the rate i is equal to the first comparison result level corresponding to the rate 1. The logical operation performed by the logical operation unit 1 will be described by taking as an example the occurrence of a pulse indicating the rate 2 in the second electrical signal at a certain time.
If a pulse indicating rate 2 appears in the second electrical signal at a certain time, that is, the peak value of the pulse output by the peak detector is U 2 And then according to U 2 The magnitude relationship with Vref1, Vref2, … …, VrefN can result in the levels of the respective comparator outputs as shown in table 1 (where 1 represents high level and 1 represents low level):
| comparator 1 | |
|
…… | Comparator N-1 | Comparator N |
| 0 | 1 | 1 | …… | 1 | 1 |
TABLE 1
Further, the bit levels of rate indication corresponding to rate 1-rate N can be obtained according to the above logical operation formula as shown in table 2 (where 1 represents high level and 1 represents low level):
| rate 1 | |
|
…… | Rate N-1 | Rate N |
| 0 | 1 | 0 | …… | 0 | 0 |
TABLE 2
In the rate indicating bit levels corresponding to the rates, only the number indicating bit level corresponding to the rate 2 is a high level, and the rate 2 indicated by the rate selection information in the current second electrical signal can be obtained.
In a second implementation, if the different rate selection information is represented by different pulse widths of pulses in the second electrical signal, the separation module 305 may be specifically configured to perform pulse detection on the second electrical signal to obtain reset information, perform peak duration detection on the second electrical signal, and obtain the rate selection information according to the detected peak duration.
In a more specific implementation, it is assumed that the amplifying module 304 has N signal receiving operation modes corresponding to different receiving rates, where N is a positive integer. The separation module 305 may further include a second pulse detection unit, a second peak detection unit, a second comparison unit, N signal delay units, N second logic operation units, and a third logic operation unit. Wherein:
the second pulse detection unit is configured to perform pulse detection on the second electrical signal and output a pulse signal of one clock cycle when the pulse signal is detected, where the pulse signal output by the second pulse detection unit is used to trigger the amplification module 304 to enter a burst signal receiving state.
The second peak detection unit is configured to perform peak detection on the second electrical signal and output a detected second peak signal. The peak duration of the second peak signal is positively correlated with the pulse width of the second electrical signal. For example, the peak duration of the second peak signal is equal to the pulse width of the corresponding pulse in the second electrical signal.
The second comparing unit is used for comparing the magnitude of the received second reference signal and the second peak value signal and outputting a second comparison result level. It is to be understood that if the second comparison result level outputs a high level in the case where the second peak signal is higher than the second reference signal, the pulse width in the second comparison result level is positively correlated with the pulse width of the second peak signal currently being compared. For example, the pulse width in the second comparison result level is equal to the pulse width of the second peak signal currently being compared.
Each of the N signal delay units is configured to delay the second comparison result level to obtain a first delay signal, and the delay durations of the N signal delay units for the second comparison result level are different.
And the second logic operation unit is used for carrying out logic AND operation on the comparison level of the received first delay signal and the second result to obtain the indication level of the operation result.
The third logic operation unit is used for carrying out logic operation aiming at the N receiving rates according to the operation result indicating levels output by the N second logic operation units and outputting rate indicating bit levels corresponding to the N receiving rates. Among the rate indicating bit levels corresponding to the N receiving rates, only the rate indicating bit level corresponding to the first receiving rate is the second level, and the second level is used to control the amplifying module 304 to be in the signal receiving working mode corresponding to the first receiving rate.
Further, the second pulse detection unit may be implemented by various pulse edge detectors, the second peak detection unit may be implemented by various peak detectors, the second comparison unit may be implemented by various comparators (e.g., voltage comparators), the signal delay unit may be implemented by a signal delay, and the N second logic operation units or the third logic operation units may be implemented by various logic elements, logic units, or logic gate circuits, or implemented by a logic function circuit composed of logic elements and logic gate circuits. This will be described by way of example in fig. 10.
Referring to fig. 10, fig. 10 is a schematic circuit implementation diagram of another separation module 305 according to an embodiment of the present application, as shown in fig. 10, in the separation module 305, the function of the second pulse detection unit is implemented by a pulse edge detector, the function of the second peak detection unit is implemented by a peak detector, the function of the second comparison unit is implemented by a comparator, the functions of N second comparison units are implemented by a delayer 1, a delayer 2, … …, and a delayer N, the functions of N second logical operation units are implemented by an and gate 1, an and gate 2, a … …, and a gate N, and the function of the third logical operation unit is implemented by a logical operation unit 2.
The buffer in fig. 10 is an optional component, and the beneficial effects of the buffer in fig. 9 are referred to.
In fig. 10, the comparator includes a positive input terminal and a negative input terminal, the positive input terminal of the comparator can be connected to the reference voltage Vref, and the negative input terminal is connected to the second peak signal output by the peak detector. Wherein the comparator can identify the peak value of the second peak signal (the peak value can be the pulse amplitude of the pulse in the second electrical signal) by accessing Vref. For example, if the amplitude of the pulse in the second electrical signal (i.e., the peak value of the second peak signal) is U1, Vref may be a reference voltage between (0, U1).
The delay unit in fig. 10 may delay the signal output from the comparator, the delay time lengths of the N delay units for the second comparison result level are different, and the delay time length of each delay unit is related to the pulse width corresponding to each of the N different receiving rates in the second electrical signal. For example, the pulse widths corresponding to the rate 1, the rate 2, the rate … … and the rate N in the second electrical signal are t respectively 1 、t 2 、……、t n (where t is 1 -t N Sequentially increasing), the delay time lengths corresponding to the delayers 1, 2, … … and N are d1, d2, … … and dN respectively, and the relationship between the d1, d2, … … and dN and the pulse widths can be t 1 <d1<t 2 、t 2 <d2<t 3 、……、dN<t N 。
In fig. 10, the second electrical signal may be transmitted to the peak detector and the pulse edge detector respectively after passing through the buffer, on one hand, the pulse in the second electrical signal is detected by the pulse edge, and then the pulse signal carrying the reset information is output, on the other hand, the peak value of the second electrical signal is detected by the peak detector, and the detected second peak value signal is transmitted to the comparator, the comparator compares the second peak value signal with its own reference voltage Vref, and in the case that the second peak value signal is higher than its own reference voltage, the level of the second comparison result output by the comparator is a high level, and otherwise, the level of the second comparison result output by the comparator is a low level. And then, the second comparison result level output by the comparator is respectively transmitted to the N delayers and the N AND gates. And each delayer delays the level of the second comparison result to obtain a first delay signal. The first delay signal output by one delayer is transmitted to an AND gate, so that N different first delay signals and N different second comparison result levels are subjected to logical AND operation through N AND gates respectively, and operation result indicating levels corresponding to different receiving rates are obtained.
It should be noted that, if the delay time lengths corresponding to the delayer 1, the delayer 2, the delayer … …, and the delayer N are respectively equal to the pulse widths corresponding to the rate 1, the rate 2, the rate … …, and the rate N in the second electrical signal, the operation result indication level corresponding to the rate 1, the operation result indication level corresponding to the rate 2, the operation result indication level corresponding to the rate … …, and the operation result indication level corresponding to the rate N are respectively output by the and gate 1, the and gate 2, the … …, and the and gate N.
Furthermore, the operation result indicating levels corresponding to different receiving rates output by the N and gates are transmitted to the logic operation unit 2 for logic operation, and the rate indicating bit levels corresponding to the receiving rates are output. In one implementation, the logic operation unit 2 may implement the logic operation corresponding to the following logic operation formula: when i is an integer and 1 < i ≦ N, the rate indicating bit level corresponding to rate i ═ logical not (operation result indicating level corresponding to rate i) and (operation result indicating level corresponding to rate i-1) … … logical and (operation result indicating level corresponding to rate 1); when i is equal to 1, the rate indicating bit level corresponding to the rate i is equal to logical not (the operation result indicating level corresponding to the rate 1). Taking the example that the second electrical signal indicates the rate 3 at the time T3 in fig. 11 as an example, the corresponding second electrical signal describes the logical operation performed by the logical operation unit 2.
Referring to fig. 11, fig. 11 is a diagram illustrating the second comparison result level and the first delay signal output by each delay according to the embodiment of the present application, and it is assumed that only three pulses with pulse widths t1, t2, and t3 in the second electrical signal corresponding to fig. 11 represent rate 1, rate 2, and rate 3, respectively. The delay time lengths corresponding to the delayer 1, the delayer 2 and the delayer 3 are d1, d2 and d3 respectively, and the relations of t1, t2, t3, d1, d2 and d3 satisfy that: t is t 1 <d1<t 2 、t 2 <d2<t 3 、t 3 <d3. Fig. 11 shows the time-dependent changes of the second comparison result level output by the comparator, the first delay signal output by the delay unit 1, the first delay signal output by the delay unit 2, and the first delay signal output by the delay unit 3. For time T3, the level of the second comparison result output by the comparator is high, the levels of the first delay signals output by the delay units 1, 2, and 3, and the indication levels of the operation results output by the and gates 1, 2, and 3 are shown in tables 3 and 4, respectively:
| time delay unit 1 | |
|
| 1 | 1 | 0 |
TABLE 3
| And gate 1 | And |
And |
| 1 | 1 | 0 |
TABLE 4
Further, the rate indicating bit levels such as rate 1, rate 2 and rate 3 can be obtained according to the above logical operation formula
Shown in Table 5:
| rate 1 | |
|
| 0 | 0 | 1 |
TABLE 5
Only the number indicating bit level corresponding to the rate 3 among the rate indicating bit levels corresponding to the above rates is at a high level, and the rate 3 indicated by the rate selection information in the second electrical signal at the time T3 can be obtained.
In a third implementation, if the different rate selection information is represented by the number of pulses in a set of consecutive pulses in the second electrical signal, the separation module 305 may be specifically configured to perform pulse detection on the second electrical signal, obtain reset information according to detection of a plurality of pulse signals, and obtain the rate selection information according to the number of pulses detected in the detection period. The detection period may be a period from the detection time of the current pulse when the separation module 305 detects that the detection time interval between the current pulse and the last detected pulse is greater than the first time threshold, and the detection period is ended when the separation module 305 does not detect a new pulse after detecting a certain pulse and if the detection time interval exceeds the first time threshold. For example, the first time threshold is 100ns, if the separation module 305 detects a new pulse within 100ns after detecting a certain pulse, the new pulse and the pulse belong to the same group of consecutive pulses within the same detection period, and if a new pulse is not detected within 100ns after detecting the pulse, the detection period in which the pulse is located is ended. The first time threshold may be related to a time interval between pulses in a set of consecutive pulses in the second electrical signal. For example, the time intervals between pulses in a set of consecutive pulses in the second electrical signal are equal, and the pulse widths are equal, and the first time threshold may be equal to the sum of the time intervals and the pulse widths. If the time intervals between pulses in a set of consecutive pulses in the second electrical signal are not all equal and the pulse widths are not all equal, the first time threshold may be equal to the sum of the largest one of the time intervals and the largest one of the pulse widths.
In a more specific implementation, it is assumed that the amplifying module 304 has N signal receiving operation modes corresponding to different receiving rates, where N is a positive integer. The separation module 305 may further include a third pulse detection unit and a triggered polling unit. Wherein:
the third pulse detection unit is configured to perform pulse detection on the second electrical signal and output a pulse signal of one clock cycle when the pulse signal is detected, where the pulse signal output by the third pulse detection unit is used to trigger the amplification module 304 to enter a burst signal receiving state.
The trigger polling unit is used for detecting pulse signals in a detection period, determining a first receiving rate from N receiving rates according to a first rate polling sequence under the trigger of any pulse signal detected in the detection period, and setting a rate indicating bit level corresponding to the first receiving rate to be a third level. The trigger polling unit is further configured to output rate indication bit levels corresponding to the N receiving rates. Of the rate indicating bit levels corresponding to the N receiving rates, only the rate indicating bit level corresponding to the first receiving rate is the third level, and the third level is used to control the amplifying module 304 to be in the signal receiving working mode corresponding to the first receiving rate.
Further, the third pulse detection unit may be implemented by a pulse edge detector, and the triggering polling unit may be implemented by a trigger. This will be described by way of example in fig. 12.
Referring to fig. 12, fig. 12 is a schematic circuit implementation diagram of another separation module 305 according to an embodiment of the present application, and as shown in fig. 12, in the separation module 305, a function of a third pulse detection unit is implemented by a pulse edge detector, and a function of a trigger polling unit is implemented by a flip-flop.
The buffer in fig. 12 is an optional component, and the beneficial effects of the buffer in fig. 9 are referred to.
The flip-flop of fig. 12 has a certain first rate polling sequence, and the flip-flop may determine a first receiving rate according to the first rate polling sequence and set a corresponding rate indicating bit level to a unique high level among rate indicating bit levels corresponding to all receiving rates, upon triggering of the pulse signal. The first rate polling order may be related to a number of pulses in a set of consecutive pulses in the second electrical signal versus a receiving rate. In one implementation, in the first rate polling order, the respective receiving rates may be arranged in order of the number of corresponding pulses in a set of consecutive pulses in the second electrical signal from small to large. For example, the rate 1, the rate 2, the rate … …, and the rate N in the second electrical signal may correspond to 1, 2, … …, and N pulses in a group of consecutive pulses in the second electrical signal, respectively.
The flip-flop is in a reset state (that is, all the rate indicating bit levels corresponding to the output receiving rates are high levels or all the rate indicating bit levels are low levels) at any time, or is in an indicating state for a certain receiving rate (that is, only the level corresponding to the receiving rate is high level in the rate indicating bit levels corresponding to the output receiving rates). If the flip-flop is in the reset state, after the flip-flop receives the pulse, the rate 1 is the first receiving rate, and the rate indicating bit level corresponding to the rate 1 may be set to the only high level in the rate indicating bit levels corresponding to all the receiving rates and output. If the trigger is in an indication state for a certain reception rate, the trigger is within a second time threshold from entering the indication state (i.e., within a second time threshold from the last received pulse), if a new pulse is received, the trigger may enter an indication state for a next reception rate in the first rate polling sequence (the next reception rate is a new first reception rate); if no new pulse is received, the flip-flop can be restored to the reset state. Wherein the second time threshold may be the same as the first time threshold described above.
In fig. 12, the second electrical signal may be transmitted to the pulse edge detector after passing through the buffer, and the pulse edge detector outputs the detected pulse signal by detecting pulses in the second electrical signal, on one hand, any pulse in the pulse signal can trigger the amplifying module 304 to enter a burst signal receiving state, and on the other hand, the pulses in the pulse signal can trigger the flip-flop, so that the flip-flop indicates different receiving rates under triggering of different numbers of pulses. The trigger indication logic is illustrated as a set of 3 consecutive pulses in the second electrical signal triggering a trigger indication rate of 3.
When the flip-flop in the reset state receives the first pulse in the group of continuous pulses, the rate 1 is the first receiving rate, and the flip-flop sets the rate indicating bit level corresponding to the rate 1 to the only high level in the rate indicating bit levels corresponding to all the receiving rates and outputs the rate indicating bit level. When the second pulse in the group of continuous pulses is received, according to the first rate polling sequence, the rate 2 is the first receiving rate, and the trigger sets the rate indicating bit level corresponding to the rate 2 to be the only high level in the rate indicating bit levels corresponding to all the receiving rates and outputs the rate indicating bit level. And when the third pulse in the group of continuous pulses is received, according to the first rate polling sequence, the rate 3 is the first receiving rate, and the trigger sets the rate indicating bit level corresponding to the rate 3 to be the only high level in the rate indicating bit levels corresponding to all the receiving rates and outputs the rate indicating bit level. It will be appreciated that although the group of successive pulses comprises 3 pulses, indicating rate 3 and some time after the first pulse is received before the second pulse is received, the trigger indicates rate 1 and some time after the second pulse is received before the third pulse is received, the trigger indicates rate 2, since the time interval between pulses in the same group of successive pulses is small, e.g. the time interval may be of the order of ns, and the trigger indicates a longer time for rate 3 after the third pulse is received, e.g. the time interval between different groups of successive pulses may be of the order of us, the error introduced by the brief indication of rate 1 and rate 2 is negligible.
In another alternative implementation, the control information includes one of reset information or rate selection information, and the light receiving device 30 may further include an extracting module 306 for extracting the control information from the second electrical signal and transmitting the control information to the amplifying module 304 under the power of the third power signal. The concrete implementation is introduced according to the situation:
in the case that the control information includes reset information, the extraction module 306 may be specifically configured to perform pulse detection on the second electrical signal to obtain the reset information. For example, in practical applications, the second electrical signal obtained by the decoupling module 301 after dc removal is not a standard pulse signal and cannot act on the amplifying module 304 well, and the extracting module 306 outputs a more standard pulse signal through pulse detection of the second electrical signal, so as to control the amplifying module 304 more accurately.
In the case where the control information includes rate selection information:
if the different rate selection information is represented by different pulse amplitudes of the pulses in the second electrical signal, the extraction module 306 may be specifically configured to perform peak detection on the second electrical signal, and obtain the rate selection information according to the detected signal peak value. Such as extraction module 306, may be implemented by the peak detector of fig. 9 and subsequent circuitry.
If the different rate selection information is represented by different pulse widths of the pulses in the second electrical signal, the extraction module 306 may be specifically configured to perform peak duration detection on the second electrical signal, and obtain the rate selection information according to the detected peak duration. Such as extraction module 306, may be implemented by the peak detector of fig. 10 and subsequent circuitry.
If the different rate selection information is represented by the number of pulses in a set of consecutive pulses in the second electrical signal, the extraction module 306 may be specifically configured to perform pulse detection on the second electrical signal, and obtain the rate selection information according to the number of pulses detected in the detection period. The detection period may be a period from the detection time of the current pulse when the extraction module 306 detects that the detection time interval between the detected current pulse and the last detected pulse is greater than the first time threshold, and the detection period is ended when the extraction module 306 does not detect a new pulse after detecting a certain pulse and if the detection time interval exceeds the first time threshold. Such as extraction module 306, may be implemented by the circuitry of fig. 12.
It should be understood that the specific functional implementation of the separation module 305 or the extraction module 306 may be different according to the indication manner of the control information in the first electrical signal, which is only described above as an example of the specific functional implementation of the two modules, and the implementation manner of the two modules in other control information indication manners is not exhaustive here. In addition, the extraction of the rate selection information by the separation module 305 or the extraction module 306 described above may also be implemented in other ways, and is not exhaustive here.
In addition, the photoelectric conversion module 303 may include a photodetector or a photodiode, and may perform photoelectric conversion on the received burst optical signal to obtain a fourth electrical signal. The amplifying module 304 may include a transimpedance amplifier, and may rapidly amplify and output the fourth electrical signal under the control of the control information and the power supply of the third electrical signal.
It should be understood that in the specific implementation, the above modules, such as the decoupling module 301, the voltage stabilizing module 302, the separating module 305, and the extracting module 306, may be independent modules in practical applications, or may be modules in which some modules are integrated together, for example, the decoupling module 301 and the separating module 305 may be integrated together, or one or more modules are integrated with the amplifying module 304, and the like, and the specific implementation form is not limited.
The embodiment of the application also provides a light receiving packaging device, which at least comprises five signal pins, a photoelectric detector and a transimpedance amplifier. Further, the optical receiving package device may further include other components, such as a photodetector, a connecting line between the transimpedance amplifier and the signal pin, and a filter for performing noise reduction, for example, in addition to receiving the first electrical signal, the fifth electrical signal, the ground, and the differential output amplified fourth electrical signal, if the optical receiving package device needs to receive or output other electrical signals, the optical receiving package device may further include other signal pins, and the like.
Specifically, in the light receiving package device, the five signal pins include a first signal pin, a second signal pin, a third signal pin, a fourth signal pin and a fifth signal pin, wherein:
the first signal pin is used for inputting a first electric signal, the first electric signal carries control information, and the control information is used for controlling the working state of the transimpedance amplifier.
The second signal pin is used for inputting a fifth electric signal, and the fifth signal pin is used for grounding.
The photoelectric detector is used for converting the received burst optical signal into a fourth electric signal under the power supply of the fifth electric signal.
The transimpedance amplifier is used for receiving the first electric signal, performing direct-current filtering processing on the first electric signal to obtain a second electric signal, and performing voltage stabilization processing on the first electric signal to obtain a third electric signal; the second electrical signal carries the control information. The transimpedance amplifier is further configured to amplify the fourth electrical signal under control of the control information in the second electrical signal and under power supply of the third electrical signal, so as to obtain an amplified fourth electrical signal.
The third signal pin and the fourth signal pin are used for differentially outputting a fourth electric signal amplified by the transimpedance amplifier.
Optionally, the control information includes reset information and/or rate selection information; the reset information is used for controlling the trans-impedance amplifier to enter a burst signal receiving state; the transimpedance amplifier includes N signal reception operating modes corresponding to different reception rates, where N is a positive integer, the rate selection information is used to control the transimpedance amplifier to be in the signal reception operating mode corresponding to a first reception rate, and the first reception rate is one of the N different reception rates.
For the description of the electrical signals and the control information, reference may be made to the description of the same object in the embodiment corresponding to fig. 3a, which is not described herein again. In addition, the photodetector in the light receiving and packaging device may implement the function of the photoelectric conversion module 303 in fig. 3a, the transimpedance amplifier may implement the function of the amplification module 304 in fig. 3a, and the use of each electrical signal and control information and the output of the electrical signal by each component in the light receiving and packaging device may also refer to the corresponding description in the embodiment corresponding to fig. 3a, and are not described again.
In this embodiment, after the control information may be coupled with the signal for supplying power to the transimpedance amplifier as a first electrical signal, the first electrical signal is input to the light receiving and packaging device through the first signal pin, so that the number of signal pins of the light receiving and packaging device is reduced; in addition, the first electrical signal can realize the decoupling of the control information and the power supply signal through the transimpedance amplifier in the optical receiving packaging device, so that the decoupled control information and the decoupled power supply signal respectively act normally in the transimpedance amplifier, and the optical receiving packaging device is ensured to carry out normal information recovery on the burst optical signal under the control of the control information and the power supply of the power supply signal.
The light receiving package in this embodiment may be packaged based on different packaging forms, for example, in a preferred embodiment, the light receiving package may be packaged based on any TO CAN coaxial packaging form, in other embodiments, the light receiving package may also be packaged based on a butterfly packaging form, a COB (chip on board) packaging form, or a BOX (BOX) packaging form, and so on. This is exemplified in connection with fig. 13.
Referring TO fig. 13, fig. 13 is a schematic diagram illustrating an internal structure of a light receiving package device according TO an embodiment of the present application, and fig. 13 shows a portion below a cap and above a base of the light receiving package device packaged in a 5-PIN TO CAN format. Wherein the fifth signal pin is a ground signal pin connected to the base of the base, not shown in fig. 13.
An embodiment of the present application further provides an optical receiving apparatus, including an optical receiving device and a signal coupling device, where:
the signal coupling device is used for receiving the sixth electric signal and the seventh electric signal, coupling the sixth electric signal and the seventh electric signal and outputting the first electric signal. The sixth electric signal is used for supplying power to the light receiving equipment, the seventh electric signal carries control information, and the control information is used for controlling the working state of the light receiving device.
The optical receiving device is used for receiving the first electric signal, performing direct current removal processing on the first electric signal to obtain a second electric signal, and performing voltage stabilization processing on the first electric signal to obtain a third electric signal. The optical transceiver is also used for receiving the burst optical signal and a fifth electric signal, converting the received burst optical signal into a fourth electric signal under the power supply of the fifth electric signal, and amplifying and outputting the fourth electric signal under the control of the second electric signal and the power supply of the third electric signal.
The sixth electrical signal may be a direct current electrical signal, is used to supply power to the light receiving device, and may be recorded as a VCC signal. The seventh electrical signal may be a pulse signal carrying control information. The control information may include reset information and/or rate selection information, among others. Wherein, the seventh electrical signal may be sent to the light receiving device by other light communication devices. For example, the optical receiving device may be a part of the OLT, and the seventh telecommunication may be from a Media Access Control (MAC) device or other upper layer devices in the PON system in which the OLT is located.
For the descriptions of the reset information and the rate selection information, reference may be made to the corresponding descriptions in the corresponding embodiment in fig. 3a, and details are not repeated.
When the seventh electrical signal includes the reset information and the rate selection information at the same time, the seventh electrical signal may indicate the reset information through pulses therein, and indicate the rate selection information through a pulse amplitude of the pulses, a pulse width of the pulses, or a number of pulses in a group of continuous pulses, and a specific indication manner may refer to an indication manner of the rate information in the first electrical signal in the embodiment corresponding to fig. 3a, which is not described herein again.
The signal coupling device may comprise a coupler for coupling the sixth electrical signal of direct current and the seventh electrical signal of alternating current to obtain the first electrical signal, and the signal coupling device may be implemented in many different ways, as shown in fig. 14 as an example. Referring to fig. 14, fig. 14 is a schematic circuit implementation diagram of a signal coupling device according to an embodiment of the present disclosure, as shown in fig. 14, a sixth direct-current electrical signal may be coupled through an inductor or a magnetic bead, and a seventh alternating-current electrical signal may be coupled through a capacitor, so as to obtain a first electrical signal. Wherein, resistance 1, resistance 2 are optional components and parts, can carry out the partial pressure to the seventh electric signal through resistance 1 and resistance 2, reduce the signal amplitude of the first electric signal that finally obtains, and connect the sixth electric signal through resistance 2, can provide drive current for the coupling of seventh electric signal.
The light receiving device may include the light receiving device shown in any one of fig. 3a to 3c, or the light receiving package device shown in fig. 13, which may specifically refer to the embodiment shown in fig. 3a or 13, and will not be described herein again. A detailed implementation is described below by way of example only in connection with fig. 15.
Referring to fig. 15, fig. 15 is a schematic diagram of a light receiving device provided in an embodiment of the present application, where the light receiving device includes a coupler and a light receiving package. The coupler can realize the function of the signal coupling device, and the light receiving packaging body can realize the function of the light receiving device. The light receiving package may include five signal pins: pin 1, pin 3, pin 4, and pin 5 (where pin 5 is used for ground, not shown in fig. 15).
Further, an AC (alternating current) decoupler may implement a function of the decoupling module in the embodiment corresponding to fig. 3a, a dc (direct current) stabilizer may implement a function of the voltage stabilizing module in the embodiment corresponding to fig. 3a, a decoupler may implement a function of the decoupling module in the embodiment corresponding to fig. 3a, a burst TIA core (core) may implement a function of the amplifying module in the embodiment corresponding to fig. 3a, and a photodiode may implement a function of the photoelectric conversion module in the embodiment corresponding to fig. 3 a.
In fig. 15, VCC is the sixth electrical signal, and the composite signal of the reset signal and the rate select signal is the seventh electrical signal, which may be a pulse signal generated by a signal generator of another device.
The coupler may be configured to couple VCC with a composite signal of the reset signal and the rate select signal, and a first electrical signal obtained after coupling is used for transmitting to the light receiving package through pin 1 and to the AC decoupler and the DC stabilizer, respectively. The AC decoupler may be configured to decouple a composite of the reset signal and the rate select signal (i.e., the second electrical signal) of the first electrical signal. The composite signal may be used to transmit to a splitter, which may be used to extract the reset signal and the rate select signal, respectively, and transmit them in two paths to the burst TIA core. The DC stabilizer may be configured to stabilize the first electrical signal and output VDD (i.e., the third electrical signal) for transmission to the splitter and the burst TIA core, respectively. The photodiode is configured to detect the burst optical signal under driving of the VPD (i.e., the fifth electrical signal) input through the pin 2, and perform photoelectric conversion on the burst optical signal after detecting the burst optical signal, so as to obtain a fourth electrical signal. The fourth electrical signal is for transmission to the burst TIA core. The burst TIA core can be used for working under the power supply of VDD, the reset signal is used for controlling the burst TIA core to enter a burst signal receiving state, and the rate select signal is used for controlling the burst TIA core to keep or adjust to a signal receiving working mode corresponding to a corresponding receiving rate. And then the burst TIA core may amplify the fourth electrical signal in the burst signal receiving state and the corresponding signal receiving operating mode, and differentially output the amplified fourth electrical signal through the pin 3 and the pin 4, where the amplified fourth electrical signal may be output to other devices or modules outside the optical receiving package in the optical receiving device, or may be output to other devices outside the optical receiving device.
The optical receiving device shown in fig. 15 couples the VCC signal, the reset signal, and the composite signal of the rate select signal into one signal through the coupler, and transmits the one signal into the optical receiving package through the pin 1, so that the number of signal pins of the optical receiving package is reduced; the coupled signal can be decoupled and separated in the light receiving packaging body through the AC decoupler, the DC stabilizer and the separator, and the decoupled and separated signal can normally act on the burst TIA core to ensure the normal work of the burst TIA core.
The embodiment of the present application further provides an optical signal processing method, which may be used to receive and process a burst optical signal, and the method may include:
receiving the first electric signal, and performing direct current removal processing on the first electric signal to obtain a second electric signal; the first electrical signal carries control information; the second electric signal is a pulse signal, and the second electric signal carries the control information; the control information is used for controlling the working state of the light receiving device;
performing voltage stabilization processing on the first electric signal to obtain a third electric signal; the third electric signal is a signal with constant amplitude;
receiving a burst light signal and a fifth electrical signal, and converting the received burst light signal into a fourth electrical signal according to the fifth electrical signal;
and amplifying the fourth electric signal according to the second electric signal and the third electric signal, and outputting the amplified fourth electric signal.
The method may be applied to a light receiving device, optionally, the light receiving device may be a light receiving device shown in any one of fig. 3a to 3c or a light receiving packaging device shown in fig. 13, and specific implementation manners and beneficial effects of the steps may refer to specific implementations of the functional modules in fig. 3a or fig. 13, which are not described herein again.
An embodiment of the present application further provides another optical signal processing method, which may be applied to an optical communication device, where the optical communication device includes an optical receiving apparatus, and the method may include:
receiving a sixth electrical signal and a seventh electrical signal, and coupling the sixth electrical signal and the seventh electrical signal to obtain a first electrical signal; the sixth electrical signal is used for supplying power to the optical communication equipment, the seventh electrical signal carries control information, and the control information is used for controlling the working state of the optical receiving device;
and inputting the first electric signal into the optical receiving device, wherein the first electric signal is used by the optical receiving device for information recovery of the burst optical signal.
Wherein, the sixth electric signal and the seventh electric signal can refer to the corresponding description of the same object in the above embodiments. In addition, the optical receiving device in the optical communication device may be the optical receiving device shown in any one of fig. 3a to 3c or the optical receiving encapsulation device shown in fig. 13, and a specific manner of the optical receiving device performing information recovery on the burst optical signal through the first electrical signal may refer to the description of the specific implementation manner in the embodiment corresponding to fig. 3a or fig. 13, and is not described again.
The embodiment of the present application provides a chip, which includes a processor and a communication interface, where the processor is coupled to the communication interface, and is used to implement all or part of the functions of the light receiving device shown in any one of fig. 3a to 3c, or implement all or part of the functions of the light receiving package device shown in fig. 13, or implement the optical signal processing method provided in the embodiment of the present application.
In the description of the embodiments of the present application, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association describing an associated object, and means that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
It should be understood by those of ordinary skill in the art that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic, and should not limit the implementation process of the embodiments of the present application.
Claims (19)
1. An optical receiving device is used for receiving and processing burst optical signals and is characterized by comprising a decoupling module, a voltage stabilizing module, a photoelectric conversion module and an amplifying module;
the decoupling module is used for receiving a first electric signal and performing direct current removal processing on the first electric signal to obtain a second electric signal; the first electrical signal carries control information; the second electric signal is a pulse signal, and the second electric signal carries the control information; the control information is used for controlling the working state of the amplifying module;
the voltage stabilizing module is used for receiving the first electric signal and stabilizing the first electric signal to obtain a third electric signal; the third electric signal is a signal with constant amplitude and is used for providing stable working voltage for the amplification module;
the photoelectric conversion module is used for receiving the burst optical signal and converting the received burst optical signal into a fourth electric signal;
the amplifying module is used for amplifying the fourth electric signal under the control of the control information in the second electric signal and the power supply of the third electric signal and outputting the amplified fourth electric signal.
2. The apparatus of claim 1, wherein the control information comprises reset information and/or rate selection information; the reset information is used for controlling the amplification module to enter a burst signal receiving state; the amplifying module comprises N signal receiving working modes corresponding to different receiving rates, wherein N is a positive integer; the rate selection information is used to control the amplification module to be in a signal receiving working mode corresponding to a first receiving rate, where the first receiving rate is one of the N different receiving rates.
3. The apparatus of claim 2, wherein the control information comprises the reset information and the rate selection information;
the device further comprises a separation module, which is used for respectively extracting the reset information and the rate selection information from the second electrical signal under the power supply of the third electrical signal, and respectively transmitting the reset information and the rate selection information to the amplification module.
4. The apparatus according to claim 3, wherein the separation module is specifically configured to perform pulse detection on the second electrical signal to obtain the reset information, perform peak detection on the second electrical signal, and obtain the rate selection information according to a detected signal peak.
5. The apparatus according to claim 3, wherein the separation module is specifically configured to perform pulse detection on the second electrical signal to obtain the reset information, perform peak duration detection on the second electrical signal, and obtain the rate selection information according to the detected peak duration.
6. The apparatus according to claim 3, wherein the separation module is specifically configured to perform pulse detection on the second electrical signal, obtain a plurality of reset information according to detection of a plurality of pulse signals, and obtain rate selection information according to a number of pulses detected in a detection period.
7. The apparatus of claim 3, wherein the control information comprises one of reset information or rate selection information;
the device further comprises an extraction module for extracting the control information from the second electrical signal under the power supply of the third power supply signal and transmitting the control information to the amplification module.
8. The apparatus according to claim 7, wherein the control information includes reset information, and the extraction module is specifically configured to perform pulse detection on the second electrical signal to obtain the reset information.
9. The apparatus of claim 7, wherein the control information comprises rate selection information, and wherein the extraction module is specifically configured to perform peak detection on the second electrical signal, and obtain the rate selection information according to a detected signal peak.
10. The apparatus of claim 7, wherein the control information comprises rate selection information, and wherein the extraction module is specifically configured to perform peak duration detection on the second electrical signal, and to obtain the rate selection information according to the detected peak duration.
11. The apparatus according to claim 7, wherein the control information comprises rate selection information, and the extraction module is specifically configured to perform pulse detection on the second electrical signal, and obtain the rate selection information according to a number of pulses detected in a detection period.
12. The apparatus of claim 4, wherein the separation module comprises a first pulse detection unit, a first peak detection unit, N first comparison units, and a first logic operation unit;
the first pulse detection unit is used for performing pulse detection on the second electric signal and outputting a pulse signal with one clock period when the pulse signal is detected, and the pulse signal output by the first pulse detection unit is used for triggering the amplification module to enter the burst signal receiving state;
the first peak detection unit is used for carrying out peak detection on the second electric signal and outputting a detected first peak signal;
each of the N first comparison units is configured to compare the magnitude of the received first reference signal with the magnitude of the first peak signal, and output a first comparison result level; the N first comparison units receive different first reference signals;
the first logic operation unit is used for performing logic operation according to the first comparison result levels output by the N first comparison units and outputting rate indication bit levels corresponding to the N receiving rates; wherein, among the bit levels of the rate indication corresponding to the respective N receiving rates, only the bit level of the rate indication corresponding to the first receiving rate is a first level, and the first level is used to control the amplifying module to be in a signal receiving working mode corresponding to the first receiving rate.
13. The apparatus of claim 5, wherein the separation module comprises a second pulse detection unit, a second peak detection unit, a second comparison unit, N signal delay units, N second logical operation units, and a third logical operation unit;
the second pulse detection unit is used for performing pulse detection on the second electric signal and outputting a pulse signal with one clock period when the pulse signal is detected, and the pulse signal output by the second pulse detection unit is used for triggering the amplification module to enter the burst signal receiving state;
the second peak detection unit is used for carrying out peak detection on the second electric signal and outputting a detected second peak signal; the peak duration of the second peak signal is positively correlated with the pulse width of the second electrical signal;
the second comparing unit is used for comparing the magnitude of the received second reference signal and the second peak value signal and outputting a second comparison result level;
each delay unit in the N signal delay units is configured to delay the second comparison result level to obtain a first delay signal, and delay durations of the N signal delay units for the second comparison result level are different;
the signal delay unit is connected with the second logic operation unit, and the second logic operation unit is used for carrying out logic AND operation on the comparison level of the received first delay signal and the second result to obtain an operation result indicating level;
the third logic operation unit is used for performing logic operation according to the operation result indication levels output by the N second logic operation units and outputting rate indication bit levels corresponding to N receiving rates; wherein, among the rate indicating bit levels corresponding to the respective N receiving rates, only the rate indicating bit level corresponding to the first receiving rate is a second level; the second level is used for controlling the amplifying module to be in a signal receiving working mode corresponding to the first receiving rate.
14. The apparatus of claim 6, wherein the separation module comprises a third pulse detection unit, a triggered polling unit;
the third pulse detection unit is used for performing pulse detection on the second electric signal and outputting a pulse signal with one clock period when the pulse signal is detected, and the pulse signal output by the third pulse detection unit is used for triggering the amplification module to enter the burst signal receiving state;
the trigger polling unit is used for detecting pulse signals in the detection period, determining a first receiving rate from the N receiving rates according to a first rate polling sequence under the trigger of any pulse signal detected in the detection period, and setting a rate indicating bit level corresponding to the first receiving rate to be a third level; the receiver is also used for outputting rate indicating bit levels corresponding to the N receiving rates respectively; among the rate indicating bit levels corresponding to the N receiving rates, only the rate indicating bit level corresponding to the first receiving rate is the third level; the third level is used for controlling the amplifying module to be in a signal receiving working mode corresponding to the first receiving rate.
15. The light receiving packaging device is characterized by comprising five signal pins, a photoelectric detector and a trans-impedance amplifier;
the five signal pins comprise a first signal pin, a second signal pin, a third signal pin, a fourth signal pin and a fifth signal pin;
the first signal pin is used for inputting a first electric signal; the first electrical signal carries control information; the control information is used for controlling the working state of the trans-impedance amplifier;
the second signal pin is used for inputting a fifth electric signal; the fifth signal pin is used for grounding;
the photoelectric detector is used for converting the received burst optical signal into a fourth electrical signal under the power supply of the fifth electrical signal;
the transimpedance amplifier is used for receiving the first electric signal; the direct current filter is used for performing direct current filtering processing on the first electric signal to obtain a second electric signal, and performing voltage stabilization processing on the first electric signal to obtain a third electric signal; the second electrical signal carries the control information; the second electric signal is used for amplifying the fourth electric signal under the control of control information in the second electric signal and under the power supply of the third electric signal to obtain an amplified fourth electric signal;
the third signal pin and the fourth signal pin are used for differentially outputting the fourth electric signal amplified by the transimpedance amplifier.
16. The apparatus of claim 15, wherein the control information comprises reset information and/or rate selection information; the reset information is used for controlling the trans-impedance amplifier to enter a burst signal receiving state; the transimpedance amplifier includes signal receiving operation modes corresponding to N different receiving rates, where N is a positive integer, the rate selection information is used to control the transimpedance amplifier to be in the signal receiving operation mode corresponding to a first receiving rate, and the first receiving rate is one of the N different receiving rates.
17. An optical receiving apparatus comprising optical receiving means and signal coupling means;
the signal coupling device is used for receiving a sixth electric signal and a seventh electric signal, coupling the sixth electric signal and the seventh electric signal and outputting a first electric signal; the sixth electrical signal is used for supplying power to the light receiving device, the seventh electrical signal carries control information, and the control information is used for controlling the working state of the light receiving device;
the optical receiving device is used for receiving the first electric signal, performing direct current removal processing on the first electric signal to obtain a second electric signal, and performing voltage stabilization processing on the first electric signal to obtain a third electric signal; the optical transceiver is also used for receiving a burst optical signal and a fifth electrical signal, converting the received burst optical signal into a fourth electrical signal under the power supply of the fifth electrical signal, and amplifying and outputting the fourth electrical signal under the control of the second electrical signal and the power supply of the third electrical signal; the light receiving device is the device according to any one of claims 1 to 16.
18. An optical signal processing method, applied in an optical receiving apparatus, for receiving and processing a burst optical signal, includes:
receiving the first electric signal, and performing direct current removal processing on the first electric signal to obtain a second electric signal; the first electrical signal carries control information; the second electric signal is a pulse signal, and the second electric signal carries the control information; the control information is used for controlling the working state of the light receiving device;
carrying out voltage stabilization treatment on the first electric signal to obtain a third electric signal; the third electric signal is a signal with constant amplitude;
receiving a burst light signal and a fifth electric signal, and converting the received burst light signal into a fourth electric signal according to the fifth electric signal;
and amplifying the fourth electric signal according to the second electric signal and the third electric signal, and outputting the amplified fourth electric signal.
19. An optical signal processing method applied to an optical communication device, the optical communication device including an optical receiving apparatus, the method comprising:
receiving a sixth electric signal and a seventh electric signal, and coupling the sixth electric signal and the seventh electric signal to obtain a first electric signal; the sixth electrical signal is used for supplying power to the optical communication device, the seventh electrical signal carries control information, and the control information is used for controlling the working state of the optical receiving device;
inputting the first electrical signal into the light receiving device, the first electrical signal being used by the light receiving device to perform the method of claim 18.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110221354.9A CN114975677B (en) | 2021-02-27 | 2021-02-27 | Light receiving device, light receiving package device, related apparatus and method |
| CN202410178228.3A CN118213431A (en) | 2021-02-27 | 2021-02-27 | Light receiving device, light receiving package device, related apparatus and method |
| EP22758699.7A EP4283688A1 (en) | 2021-02-27 | 2022-01-14 | Optical receiving apparatus, optical receiving packaging apparatus, and related device and method |
| PCT/CN2022/071917 WO2022179333A1 (en) | 2021-02-27 | 2022-01-14 | Optical receiving apparatus, optical receiving packaging apparatus, and related device and method |
| US18/452,759 US20230396342A1 (en) | 2021-02-27 | 2023-08-21 | Optical receiving apparatus, optical receiving packaging apparatus, and related device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110221354.9A CN114975677B (en) | 2021-02-27 | 2021-02-27 | Light receiving device, light receiving package device, related apparatus and method |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410178228.3A Division CN118213431A (en) | 2021-02-27 | 2021-02-27 | Light receiving device, light receiving package device, related apparatus and method |
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| Publication Number | Publication Date |
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| CN114975677A true CN114975677A (en) | 2022-08-30 |
| CN114975677B CN114975677B (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110221354.9A Active CN114975677B (en) | 2021-02-27 | 2021-02-27 | Light receiving device, light receiving package device, related apparatus and method |
| CN202410178228.3A Pending CN118213431A (en) | 2021-02-27 | 2021-02-27 | Light receiving device, light receiving package device, related apparatus and method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410178228.3A Pending CN118213431A (en) | 2021-02-27 | 2021-02-27 | Light receiving device, light receiving package device, related apparatus and method |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20230396342A1 (en) |
| EP (1) | EP4283688A1 (en) |
| CN (2) | CN114975677B (en) |
| WO (1) | WO2022179333A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115967447B (en) * | 2023-03-16 | 2023-07-14 | 北京玻色量子科技有限公司 | Photoelectric measurement feedback system capable of calculating data transmission delay and calculation method thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307409A (en) * | 2000-01-27 | 2001-08-08 | 华为技术有限公司 | Single-fiber two-way integral optical module for burst reception |
| EP1241811A2 (en) * | 2001-03-13 | 2002-09-18 | EMC Electronic Media Communication S.A. | Optical cable modem |
| JP2004222116A (en) * | 2003-01-17 | 2004-08-05 | Nippon Telegr & Teleph Corp <Ntt> | Burst signal optical receiver |
| US20060120732A1 (en) * | 2004-12-03 | 2006-06-08 | Samsung Electronics Co.; Ltd | Apparatus and method in optical receiver for receiving burst mode signal |
| US20110129235A1 (en) * | 2008-08-13 | 2011-06-02 | Electronics And Telecommunications Research Institute | Burst-mode optical signal receiver |
| CN102347794A (en) * | 2010-08-04 | 2012-02-08 | 成都优博创技术有限公司 | Burst light signal receiving apparatus |
| US20140016949A1 (en) * | 2011-01-25 | 2014-01-16 | Nippon Telegraph And Telephone Corporation | Optical signal detection circuit and optical receiver |
| JP2015065613A (en) * | 2013-09-26 | 2015-04-09 | 日本電信電話株式会社 | Communication system, relay device, communication method and relay method |
| CN107027336A (en) * | 2015-11-27 | 2017-08-08 | 三菱电机株式会社 | Optical receiver, optical communication apparatus and control method |
| CN109067464A (en) * | 2018-09-11 | 2018-12-21 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN109743113A (en) * | 2018-12-14 | 2019-05-10 | 青岛海信宽带多媒体技术有限公司 | Optical module and optical line terminal |
| US20200213011A1 (en) * | 2017-06-27 | 2020-07-02 | Sumitomo Electric Industries, Ltd. | Optical receiver module, optical receiving method, optical line terminal, pon system, and optical filter |
-
2021
- 2021-02-27 CN CN202110221354.9A patent/CN114975677B/en active Active
- 2021-02-27 CN CN202410178228.3A patent/CN118213431A/en active Pending
-
2022
- 2022-01-14 EP EP22758699.7A patent/EP4283688A1/en active Pending
- 2022-01-14 WO PCT/CN2022/071917 patent/WO2022179333A1/en unknown
-
2023
- 2023-08-21 US US18/452,759 patent/US20230396342A1/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307409A (en) * | 2000-01-27 | 2001-08-08 | 华为技术有限公司 | Single-fiber two-way integral optical module for burst reception |
| EP1241811A2 (en) * | 2001-03-13 | 2002-09-18 | EMC Electronic Media Communication S.A. | Optical cable modem |
| JP2004222116A (en) * | 2003-01-17 | 2004-08-05 | Nippon Telegr & Teleph Corp <Ntt> | Burst signal optical receiver |
| US20060120732A1 (en) * | 2004-12-03 | 2006-06-08 | Samsung Electronics Co.; Ltd | Apparatus and method in optical receiver for receiving burst mode signal |
| US20110129235A1 (en) * | 2008-08-13 | 2011-06-02 | Electronics And Telecommunications Research Institute | Burst-mode optical signal receiver |
| CN102347794A (en) * | 2010-08-04 | 2012-02-08 | 成都优博创技术有限公司 | Burst light signal receiving apparatus |
| US20140016949A1 (en) * | 2011-01-25 | 2014-01-16 | Nippon Telegraph And Telephone Corporation | Optical signal detection circuit and optical receiver |
| JP2015065613A (en) * | 2013-09-26 | 2015-04-09 | 日本電信電話株式会社 | Communication system, relay device, communication method and relay method |
| CN107027336A (en) * | 2015-11-27 | 2017-08-08 | 三菱电机株式会社 | Optical receiver, optical communication apparatus and control method |
| US20200213011A1 (en) * | 2017-06-27 | 2020-07-02 | Sumitomo Electric Industries, Ltd. | Optical receiver module, optical receiving method, optical line terminal, pon system, and optical filter |
| CN109067464A (en) * | 2018-09-11 | 2018-12-21 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN109743113A (en) * | 2018-12-14 | 2019-05-10 | 青岛海信宽带多媒体技术有限公司 | Optical module and optical line terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022179333A1 (en) | 2022-09-01 |
| CN114975677B (en) | 2024-03-01 |
| US20230396342A1 (en) | 2023-12-07 |
| CN118213431A (en) | 2024-06-18 |
| EP4283688A1 (en) | 2023-11-29 |
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